enlarge, magnify
puff, puff out, puff up
inflate
amplify, expand, inflate
detonate, explode
detonate, explode, set off
aggrandise, aggrandize, dramatise, dramatize, embellish, embroider, lard, pad
blow a fuse, blow one's stack, combust, flip one's lid, flip one's wig, fly off the handle, go ballistic, have a fit, have kittens, hit the ceiling, hit the roof, lose one's temper, throw a fit